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Study on the recovery process and the main controlling factors for post-storm beach profiles of a headland bay: Taking the Narrabeen Beach in Australia as an example
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Xi Feng1, 2, 3, Yashi Mao1, Yingtao Zhou2, 3, 4
Haiyang Xuebao | 2023, 45(12) : 80 - 91
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Haiyang Xuebao | 2023, 45(12): 80-91
Article
Study on the recovery process and the main controlling factors for post-storm beach profiles of a headland bay: Taking the Narrabeen Beach in Australia as an example
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Xi Feng1, 2, 3, Yashi Mao1, Yingtao Zhou2, 3, 4
Affiliations
  • 1College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
  • 2Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources/Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, China
  • 3Hainan Provincial Key Laboratory of Marine Geology and Environment, Haikou 570206, China
  • 4Shanghai Urban Construction Design & Research Institute, Shanghai 200125, China
Published: 2023-12-31 doi: 10.12284/hyxb2023159
Outline
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Narrabeen Beach, located Sydney, Australia, has undergone frequent storm wave events. The beach form has an adaptive ability to evolve from storm profile to berm profile with little human intervention. In order to investigate the self-recovery capability of the headland bay after storm waves, this paper analyzes how beach evolves during the post-storm calm weathers and identify the main hydrodynamic factors that dominate the beach recovery based on the multi-year continuous measurement data of Narrabeen Beach. The results show that there are spatial differences along the shore in the recovery rates, with the fastest recovery rate in the middle of the beach. Besides, southeast breezes with small wave-height and long wave-period contribute most to the storm-profiles’ recovery, especially to the northern-to-central portion. Whilst for the southern part of the headland bay tidal force modulate the beach recovery efficiency more. Accordingly, a concept of cumulative wave energy considering tidal range is proposed by this study and found to well correlated with the self-recovery ability of the southern beach profile. Through investigation, variation of wave directions induced by topography, along with geological and geomorphological features all play a vital role on the spatial inhomogeneity of the recovery efficiency for the headland bay. In addition, from the secular time scale, the recovery ability of the storm profiles is also controlled by the Southern Oscillation Index. The analysis and findings of this paper can provide useful references for disaster prevention and mitigation, and post-disaster protection and restoration for a headland bay under extreme sea forces.

headland beach  /  storm profile  /  recovery during calm weathers  /  self-recovery capability of a beach
Xi Feng, Yashi Mao, Yingtao Zhou. Study on the recovery process and the main controlling factors for post-storm beach profiles of a headland bay: Taking the Narrabeen Beach in Australia as an example[J]. Haiyang Xuebao, 2023 , 45 (12) : 80 -91 . DOI: 10.12284/hyxb2023159
Year 2023 volume 45 Issue 12
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Article Info
doi: 10.12284/hyxb2023159
  • Receive Date:2023-05-25
  • Online Date:2025-12-28
  • Published:2023-12-31
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History
  • Received:2023-05-25
  • Revised:2023-08-03
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Affiliations
    1College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
    2Key Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources/Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration, Xiamen 361005, China
    3Hainan Provincial Key Laboratory of Marine Geology and Environment, Haikou 570206, China
    4Shanghai Urban Construction Design & Research Institute, Shanghai 200125, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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